Posterior Slope Angle In The Clinical Application Research Of Total Knee Arthroplasty

Posterior Cruciate-Stabilizing Total Knee Prostheses of Link company wad used in Total Knee Arthroplasty(TKA). Anatomical and routine method was introduced for tibial osteotomy in TKA. Then we evaluated the early clinical effect of the two methods through the measurement and analysis of the radiographic date.The purpose of the study was to illuminate which method of tibial osteotomy is better to guide further clinical operation.The prospectie, randomized, controlled method was adopted,according to the inclusion criteria and exclusion criteria, we selected of the Chinese People’s Liberation Army 252 hospital joint surgery during January 2013—December 2013 80 cases of patients with unilateral total knee arthroplasty. According to the tibial osteotomy method was divided into two groups, the anatomy of the group of 42 cases of tibial osteotomy,the 7°~10°routine group of 38 cases of tibial osteotomy. On the knee joint side X-ray before and after the operation, we measured the angle of posterior slope angle(PSA) relevanting imaging assessment; Before and after the total knee arthroplasty 3 months, 6 months, 1 year, we evaluated the function according to the score of HSS, calculated the excellent in both groups, the two groups of all data using SPSS 18.0 software for statistical analysis. The count of data between the two groups using ? 2 test,measurement data using paired t test, P <0.05 for the difference was statistically significant.The two groups of the patients were the grade A healing of incision,the surgery had no obvious complications, found no cases of postoperativeneed repair. Postoperative follow-up of the two groups of patients with knee joint pain, function, activity had been improved. Anatomical group per patient’s postoperative posterior slope angle and the preoperative angle had no significant difference, P > 0.05; Routine 7°~10°group per patient’s postoperative posterior slope angle and the preoperative angle had obvious difference, 93% concentration between 7°~10°, P <0.05; The HSS score of two groups of patients with postoperative 3 months, 6 months, 1 year follow-up was treated group t test according to the rate of good by,anatomical group was significantly higher than the routine 7°~10°group, P< 0.05, the differences were statistically significant.Total knee arthroplasty is a kind of mature orthopaedic surgery. It has an exact curative effect for advanced osteoarthritis. Use of the method of the tibial anatomical osteotomy, can make the patient’s postoperative PSA and the preoperative PSA basic same. The method of tibial anatomical osteotomy compared to the method of 7°~10° routine tibial osteotomy can get better clinical curative effect. But the long-term clinical effect still need further clinical observation.